NERL's Reagent Grade Water will improve control in critical diagnostic procedures such as coagulation determinations. With completely documented analyses, it meets or exceeds ACS, CAP, NCCLS and USP standards. You can eliminate the time and expense of doing these tests yourself. NERL's Reagent Grade Water comes ready to use and is sold in a variety of sizes including 20L Cubitainersâ, one gallon containers or pints. A Certificate of Analysis is included in each case. NERL's Reagent Grade Water provides you with consistency from test to test and lot to lot. Distributor inquiries encouraged!